Andbew m



, UNITED STATES PATENT OFFICE.

ANDREW M. DUNGAN AND MILTON LAC-BOFE, OF SPRINGFIELD, OHIO; SAID DUNGAN ASSIGNOR TO ALBERT K. HAHN, OF SAME PLACE.

MECHANISM FOR DRIVING HARVVESTE'R-CUTTERS.

SPECIFICATION forming part Of Letters Patent NO. 296,150, dated April 1, 1884.

Application filed July 23, 1883. (No model.)

To a l whom it may concern.-

Be it known that we, ANDREW M. DUNGAN and MILTON LAoRoN both of Springfield, in the county of Clark and State of Ohio, have invented a new and useful Improvement in Harvester Gutter Driving Mechanism, of which the following is a specification.

Our invention relates to an improvement in the mechanism by which the comparatively slow rotary motion of a harvesters groundwheel is resolved into a rapid and as nearly as possible uniform reciprocating motion of the sickle. I

In order thatthe invention may be fully understood, we will proceed to describe it with reference to the accompanying drawings,in which- Figure l is a plan, and Fig. 2 is a transverse section, of a mechanism embodying our invention. Fig. 3 represents one of the distancing-washers. i

A may represent a portion of the frame of a reaping or mowing machine; B, asprocketwheel driven by a chain-connection, O, with one of the ground-wheels. The said sprocket-wheel is secured to a counter-shaft, F, upon which are mounted two similar serrated disks, G G, both of which are capable of longitudinal adjustment upon the said shaft F. The splines f on the shaft F, engaging with the grooves g in the disks GG, insure the rota tion of said disks with said shaft, while permitting them to be adjusted longitudinally thereon.

H are thin washers, some or all of which, when the machine is new, are interposed between the two disks G G. i

I I are two caps for holding the shaft F in its hearings on the standards I rising from the frame A. The removal of these caps permits the transposition of one or more of said washers on the shaftF from the inner or outer sides of the disks. After such transposition the shaft F and the caps are replaced, thelatter being fixed to the standards I by means of the bolts D. The vibrating lever J, pivoted at one end to the frame A, is coupled by a universal joint, j, at the other end to the sickle-driving pitman K, and carries, at or near its mid-length, a roller, L, that occupies as completely 'as possible,withont binding, the whole width of'the sinuous or zigzag channel 9 between the serrated disks G andvG.

The above-described mechanism insures an almost equable speed of the sickle at every part of the stroke. The transposable washers H, in connection with the removable caps or bearings I I and adjustable disks G G, enable the apparatus to be set so as to bring the sickle-teeth into exact registration with the guard-fingers. The said arrangement also enables the adj ustinent of the width of the groove 9, so as to rectify, from time to time, any looseness or slack motion incidental to the unavoidably severe wear of these important parts.

Having thus described our invention, the following is what we claim as new therein and desire to secure by Letters Patent 1. In aharvester-cutter-driving mechanism, the combination of the splined countershaft F, the adjustable serrated or grooved disks G G, the washers H, and the removable caps I I, as set forth.

2, In combination with the shaft F, disks G G, and washers H, the lever J, provided with the roller L, engaging the sinuous space 9 between said disks, as set forth.

In testimony of whichinvention we hereunto set our hands;

*hNDREw M. .DUNGAN.

MILTON LAGRONE.

Attest: I

GEo. KNIGHT, N. ROOKHOLD. 

